Composition roofing shingle



0. B. CLOW COMPOSITION ROOFING SHINGLE Oct. 20, 1931.

Filed Oct. 21, 1930 INVENTOR 05cm? 5. 6L 0w BY ATTORNEY Patented Get.20, 1931 PATENT: crevice oscen a. snow, or TACOMA, WASHINGTONeorarosrrron noornvs snmenn Application filed October 21, 1930. SerialNo. 49l),172.

This invention relates to roofing shingles, and more particularly tocomposition shingles of a flexible character and adapted to be laid inoverlapped, interlocking relation on a roof; it being the principalobject of the present invention to provide shingles of the abovecharacter that may be laid especially fast and easy; which have a veryefi ective interlock formed without any undue overlap or waste ofmaterial; which do not permit leakage at the joints; and which will layflatly and tightly together injplaoe on a root.

. More specifically stated, the inventionresides in the provision ofshingles of the above character of substantially rectangular form, anddesigned to be laid in horizontal courses; and wherein each shingle of acourse has one side edge underlapping the next adjacent shingle at thatside. and has its opposite edge overlapping the edge of the nextadjacent shingle at that side; and wherein each shingle is provided nearthe side edge of the overlapping portion with a slit of novel formationsetting 03 an anchor tab from the'bottom edge of the shingle over whichwill lie the underlapping portion of the adjacent shingle to thus coverthe tab. and at the same time, efi'ect an interlock whichwill hold thelapped edges of the two shingles securely in place.

Another object of the present invention is to provide a method ofcuttingthe shingles from a strip so as to avoid waste and to therebyprovide maximum roof coverage from the strip.

Other objects of the invention reside in the details of construction ofthe individual shingles and in the method of laying them. as willhereinafter befully described. In accomplishing these and other objectsof vtheinvention, l have provided the improved details of construction,the preferred forms of which are illustrated in the accompanyingdrawings, wherein- Fig. l is a perspective view of a part of a 'rooiformed by shingles cut and laid in accordance with the presentinvention.

Fig. 2 is a perspective view of one of the n shingles, particularlyillustrating the formation and location of the anchor tab defining s it.

Fig. 3 is a sectional detail on the line 33 in Figure l, showing/theoverlap of the shingle ends and underlap of the anchor tab.

Fig. 4 is a plan view of a strip of material indicating a method ofcutting the shingles from the strip.

Referring more in detail to the drawings- It is the gist of the presentinvention to 50 provide shingles that are relatively inexpensive; whichmay be quickly and easily laid in place; and which may be interlockedinsuch manner that they will be held flatly against a roof withoutdanger of buckling or of becoming loose; and which may be secured inplace by nails, which will be completely covered in the finished roof.The invention also provides shingles having the anchor tabs formed byslits extending into the shingle body from its lower edge asdistinguished from those shingles in which the side edges are slit. V c

In carrying out the invention, in its present form, the shingles are allcut of the same size and shape; and preferably would be substantiallyrectangular and having a width approximately twice its height. Theshingles are intended to be laid in horizontal courses wherein each ofthe shingles has its opposite end portions, respectively, underlappingand overlapping the next adjacent shingles in the course.

As shown best in Figure 2 of the drawings, the shingle 1 has parallelupper and lower edges 2 and 3, and a'square cut end edge 4; at rightangles to edges 2 and 3. This square cut end of the shingle will bedesignated as the overlapping end. The opposite end of the shingle iscut angularly. It has edge portions 5 and 6 cut straight in at rightangles' to the upper and lower edges of the shingle but in offsetrelation to each other, so that the lower edge portion of the'shinglefrom edge 4 to cut 6 is longer than the upper edge portion from edge 4to cut 5. These straight out portions 5 and 6 are of equal lengths. andat their inner ends are connected by the diagonal edge '7.

Each shingle is provided'in its lower edge mo portion near theoverlapped end with an anchor tab 8. This tab is defined or formed b aseries of-connected slits, comprising the slit 10 which extends inwardlyfrom the lower edge 3 of the shingle at a right angle thereto, thenmerges with a slit 11 extending laterally at a right angle toward theopposite end of the shingle. Slit 11 then joins with a shorter slit 12that turns downwardly toward the lower edge of the shingle; the threeslits 1O, 11 and 12 thereby setting ofl an anchoring tab 8 that is freeon three sides and may be offset from the body of the shingle to effectthe interlock without buckling.

In laying the shingles on a roof, they are laid in horlzontal courses,as shown in Figure 1, preferably by starting at the left hand side andlaying toward the right. When a shingle is laid in place, anail, as at15, is

' driven through the anchor tab. The next adjacent shingle is then laidby projecting its diagonally cut end beneath the square cut edge of thelaid shingle to such extent that its lower portion adjacent the edge 6overlaps the anchor tab of the laid shingle and the square cut endportion 6 abuts against the shingle body along theslit12. A nail, as at17, is then driven through the overlapping portions of the shingles neartheir upper edge. Each successive course overlaps the one next below it,to an extent desired, dependent on whether single or double coverage isdesired. Thus it will be observed that the upper edges of the shinglesof a course are held in place by nails that are covered by the nextfollowing course, and the lower edges of the shingles are all held inplace by nails through the anchor tabs and these nails are covered bythose portions of the shinv gles which overlap the tabs.

By cutting the end edges 6 at a right angle to the bottom edge and bymaking the slit 12 at a ri ht angle to the edge, the joint between t eshingle end and body along slit 12 is made tight. The slit also permitsoffsetting of the ta downwardly to permit the overlap and interlockwithout buckling, or tendency to tear the shingle.

Shingles of this character may be made.

of the usual flexible roofing material and may be provided in variouscolors so as to make possible a very attractive roof. The interlockingconnection described provides for securely anchorin the shingles inplace without exposed nai s or anchoring devices.

Quite a saving of material used is made possible by cutting the lefthand end of the shingle in the manner illustrated. It is apparent that acertain width of material is required for the lapping of the shingles tocover the tab portions. However, this width is not'require at the upperedge of the shingle, therefore, by cutting on the diagonal line 7 towardthe upper edge of the shingle, a cer- 'tain amount of material is saved.When shingles of this character are cut from strips, an advantage ofthis formation may be taken so as to save approximately one inch ofmaterial in each shingle. This amounts to considerable when the shinglesare manufactured in large quantities.

Having thus described my invention, what I claim as new therein anddesire to secure by Letters-Patent, is:

1. A roof comprising shingles of substantially rectangular form' laid inhorizontal courses; each shingle having its opposite side edge portions,respectively, overlapping and underlapping the edge portions of the nextadjacent shingles of the same course, and each shingle being formed nearthe side edge of its overlapped end portion with a slit extendedthereinto from the lower edge and setting off an anchor tab over whichthe lower edge of thennderlapped shingle is extended.

2. A roof comprising shingles of substantially rectangular form laid inhorizontal courses; each shingle having its opposite side edge portions,respectively, overlapping and underlapping the edge portions of the nextadjacent shingles of the same course, and each shingle being formed nearthe side edge of its overlapped end portion with a slit extendedthereinto from the lower edge at a right angle, then turned laterallytoward the opposite end of the shingle, then directed downwardly, thussetting off an anchor tab that may be offset downwardly from the body ofthe shingle to receive the lower edge portion of the underlapped end ofthe adjacent shingle thereover.

3. A roof comprising shingles of substantially rectangular form laid inhorizontal courses; each shingle having its opposite side edge ortions,respectively, overlapping and under apping the edge portions of the nextadjacent shingles of the same course, and each shingle being formed nearthe side edge of its overlapped end portion with a slit extendedthereinto from the lower edge at a right angle, then turned laterallytoward the opposite end of the shingle, then directed downwardly, thussetting off an anchor tab that may be ofiset downwardly from the body ofthe shingle to receive the lower edge portion of the underlapped end ofthe adjacent shingle thereover, the edge portion of the shingle alongthe edge of the downwardly extended portion of the slit serving as anabutment for the edge of the underlapped end of the adjacent shingle.

4. A roof comprising shingles substantial- 1y of rectangular form, laidin horizontal courses; each shingle having its opposite side edgeportions, respectively, overlapping and underlapping the edge portionsof the next adjacent shingles of the same course, each shingle beingformed near the side edge of its overlapped end portion with a slitextended inwardly from its lower edge at a right angle thereto, thenlaterally toward the opposite end, then downwardly at a right angle tothe lower ed e, thus setting off an anchor tab throu h w ich a nail maybe driven, and over whic tab the end portion of the adjacent shin le mayoverlap; said underlapped end 0 the shingle being cut square at itslower edge to fit tightly against the edge of the shingle along thedownwardly extended portion of the slit, then inclined upwardly towardthe edge of the overlapped shingle.

Signed at Seattle, Washington, this 22nd day of September, 1930.

' OSCAR B. GLOW.

